correlational
People who got the new shingles shot didn’t live longer or have fewer other health problems than those who got the old one — so the dementia benefit isn’t just because they were healthier overall.
Evidence from Studies
No evidence studies found yet.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.